Island: Make upsert_node method public

Updating/inserting the node into the repository is required outside of repository itself.

monkey/monkey_island/cc/repository/i_node_repository.py

@@ -25,6 +25,14 @@ class INodeRepository(ABC):
         :raises StorageError: If an error occurs while attempting to upsert the Node
         """
 
+    @abstractmethod
+    def upsert_node(self, node: Node):
+        """
+        Store the Node object in the repository by creating a new one or updating an existing one.
+        :param node: Node that will be saved
+        :raises StorageError: If an error occurs while attempting to upsert the Node
+        """
+
     @abstractmethod
     def get_nodes(self) -> Sequence[Node]:
         """

monkey/monkey_island/cc/repository/mongo_node_repository.py

@@ -34,7 +34,7 @@ class MongoNodeRepository(INodeRepository):
                 node, dst, communication_type
             )
 
-        self._upsert_node(updated_node)
+        self.upsert_node(updated_node)
 
     @staticmethod
     def _add_connection_to_node(
@@ -50,7 +50,7 @@ class MongoNodeRepository(INodeRepository):
 
         return new_node
 
-    def _upsert_node(self, node: Node):
+    def upsert_node(self, node: Node):
         try:
             result = self._nodes_collection.replace_one(
                 {SRC_FIELD_NAME: node.machine_id}, node.dict(simplify=True), upsert=True